Table 3.
Odds ratio of late age-related macular degeneration by axial length and subfoveal choroidal thickness.
| OR | X2 | p | 95% CI | |
|---|---|---|---|---|
| AL | ||||
| < 22 mma | 1.41 | 0.193 | 0.661 | (0.30, 6.58) |
| ≥ 22 mm | 1 | — | — | — |
| AL | ||||
| ≥ 25 mmb | 4.54 | 9.36 | 0.002 | (1.72, 11.99) |
| < 25 mm | 1 | — | — | — |
| SFCT | ||||
| < 240 μmc | 4.86 | 17.62 | <0.001 | (2.32, 10.18) |
| ≥ 240 μmc | 1 | — | — | — |
| AL ≥ 25 mm and SFCT < 240 μm | 9.57 | 18.07 | <0.001 | (3.38, 27.12) |
| AL < 25 mm or SFCT ≥ 240 μm | 1 | — | — | — |
AL = axial length; CI = confidence interval; OR = odds ratio; SD = standard deviation; SFCT = subfoveal choroidal thickness.
a Axial length below mean – 1 SD = 23.42 – 1.22 = 22.20 mm, use the cut off value of 22 for convenience.
bAxial length above mean + 1 SD = 23.42 + 1.25 = 24.67 mm, use the cut off value of 25 for convenience.
c Subfoveal choroidal thickness below mean – 1 SD = 282.7 – 45.2 = 237.5 μm, use the cut off value of 240 for convenience.